Quote "...but not uninstalled it from the PC"
Why not? Have you at least checked that it is disabled in Dev Manager and in the Net Conn folder?
Now to your main issue, which may or may not be related to the above; were/are either of the adapters active in Dev Manager prior to trying to use them? No warning marks or anything? Have you checked the adapter's status and properties in the Net Conn folder? Have you run the Network Setup Wizard, from the left pane of said folder?